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<title>7.10.2 AddressList Objects </title>
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<h2><a name="SECTION0091020000000000000000"></a><a name="addresslist-objects"></a>
<br>
7.10.2 AddressList Objects 
</h2>

<p>
An <tt class="class">AddressList</tt> instance has the following methods:

<p>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-1587' xml:id='l2h-1587' class="method">__len__</tt></b>(</nobr></td>
  <td><var></var>)</td></tr></table></dt>
<dd>
Return the number of addresses in the address list.
</dl>

<p>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-1588' xml:id='l2h-1588' class="method">__str__</tt></b>(</nobr></td>
  <td><var></var>)</td></tr></table></dt>
<dd>
Return a canonicalized string representation of the address list.
Addresses are rendered in "name" &lt;host@domain&gt; form, comma-separated.
</dl>

<p>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-1589' xml:id='l2h-1589' class="method">__add__</tt></b>(</nobr></td>
  <td><var>alist</var>)</td></tr></table></dt>
<dd>
Return a new <tt class="class">AddressList</tt> instance that contains all addresses
in both <tt class="class">AddressList</tt> operands, with duplicates removed (set
union).
</dl>

<p>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-1590' xml:id='l2h-1590' class="method">__iadd__</tt></b>(</nobr></td>
  <td><var>alist</var>)</td></tr></table></dt>
<dd>
In-place version of <tt class="method">__add__()</tt>; turns this <tt class="class">AddressList</tt>
instance into the union of itself and the right-hand instance,
<var>alist</var>.
</dl>

<p>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-1591' xml:id='l2h-1591' class="method">__sub__</tt></b>(</nobr></td>
  <td><var>alist</var>)</td></tr></table></dt>
<dd>
Return a new <tt class="class">AddressList</tt> instance that contains every address
in the left-hand <tt class="class">AddressList</tt> operand that is not present in
the right-hand address operand (set difference).
</dl>

<p>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-1592' xml:id='l2h-1592' class="method">__isub__</tt></b>(</nobr></td>
  <td><var>alist</var>)</td></tr></table></dt>
<dd>
In-place version of <tt class="method">__sub__()</tt>, removing addresses in this
list which are also in <var>alist</var>.
</dl>

<p>
Finally, <tt class="class">AddressList</tt> instances have one public instance variable:

<p>
<dl><dt><b><tt id='l2h-1593' xml:id='l2h-1593' class="member">addresslist</tt></b></dt>
<dd>
A list of tuple string pairs, one per address.  In each member, the
first is the canonicalized name part, the second is the
actual route-address ("<tt class="character">@</tt>"-separated username-host.domain
pair).
</dl>

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